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balandron [24]
3 years ago
12

A,b and c form a triangle where BAC= 90 degrees, AB= 13mm and CA= 9.7mm. Find length of BC

Mathematics
1 answer:
kkurt [141]3 years ago
6 0

Answer:

7.2mm

Step-by-step explanation:

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Bob and Laquisha have volunteered to serve on the Junior Prom Committee. The names of twenty volunteers,
Law Incorporation [45]

Answer:

1/380

Step-by-step explanation:

<u>Probability of Bob's name drawn first is:</u>

  • 1/20                            as there are 20 people with equal chance

<u>And probability of Laquisha's name drawn second is: </u>

  • 1/19                            as there are 19 people left with equal chance

<u>Probability of the two events happening is: </u>

  • 1/20*1/19 = 1/380       product of individual probabilities
3 0
3 years ago
Read 2 more answers
If you know the area and the base of a triangle, how can you find the height?
Y_Kistochka [10]

Answer:    do your values into the equation A=1/2bh and do the math. First multiply the base (b) by 1/2, then divide the area (A) by the product. The resulting value will be the height of your triangle!

3 0
2 years ago
The diameter of a large sphere is 4 times the diameter of a small sphere. The surface area of the large sphere is how many times
Sever21 [200]
Surface Area of a Sphere = 4π(d/2)²
Let the smaller sphere's diameter be just a sample of 4 units in diameter and let the large spheres diameter be 4 times that of the smaller sphere.

Small Sphere: 4π(4/2)² = 16π units²
Large Sphere: 4π(16/2)² = 256π units²

256π / 16π = 16 times

The large sphere has a surface area 16 times that of the smaller one.
4 0
3 years ago
Find the exact solution to the equation 10-log8(x+2)=9
ohaa [14]

Answer:

-0.89269063 ...

Step-by-step explanation:

Put it in the calculator

8 0
3 years ago
The time it takes a student to walk from the dorm to the chemistry lab follows roughly a Normaldistribution with a mean of 20 mi
creativ13 [48]

Answer:

95.15%

Step-by-step explanation:

We have that the mean (m) is equal to 20, the standard deviation (sd) 3

They ask us for P (x <25)

For this, the first thing is to calculate z, which is given by the following equation:

z = (x - m) / sd

We have all these values, replacing we have:

z = (25 - 20) / (3)

z = 1.66

With the normal distribution table (attached), we have that at that value, the probability is:

P (z <1.66) = 0.9515

Which means that the probability that it arrives before 25 minutes is 95.15%

6 0
3 years ago
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